Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
  • B60S1/00—Cleaning of vehicles
  • B60S1/02—Cleaning windscreens, windows or optical devices
  • B60S1/04—Wipers or the like, e.g. scrapers
  • B60S1/32—Wipers or the like, e.g. scrapers characterised by constructional features of wiper blade arms or blades
  • B60S1/34—Wiper arms; Mountings therefor
  • B60S1/3463—Means to press blade onto screen
  • B60S1/3465—Means to press blade onto screen with coil springs
  • B60S1/3468—Mountings therefor
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
  • B60S1/00—Cleaning of vehicles
  • B60S1/02—Cleaning windscreens, windows or optical devices
  • B60S1/04—Wipers or the like, e.g. scrapers
  • B60S1/32—Wipers or the like, e.g. scrapers characterised by constructional features of wiper blade arms or blades
  • B60S1/34—Wiper arms; Mountings therefor
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T403/00—Joints and connections
  • Y10T403/32—Articulated members
  • Y10T403/32541—Rotatable members resiliently biased to one position

Definitions

• the invention relates to a foldable wiper arm, in particular for motor vehicles, which can be brought into a first, spring-loaded working position by pivoting and can assume a second position in the position folded down from the working position.
• the wiper arms are pulled towards the windshield of a motor vehicle via a spring loaded under tension.
• a spring loaded under tension In order to replace a wiper blade, it is necessary that the wiper arm is pivoted into a position in which a wiper blade is brought into a distance from the windshield, in which position locking must take place. This locking prevents the wiper arm from snapping back when the tension spring is elongated.
• Another known fold-down lock is that when the wiper arm is pulled up, a ring, which is mounted on a pin with sufficient play and is encompassed by a spring eye, is pushed over a locking cam. The ring is first pushed against the cam against the spring force and then clicks into place. The new position is held by the spring tension and the wiper arm remains in its folded position to enable a lower folded position.
• the contact surfaces can be arranged on a central rib of the extension or on inner side walls of the extension.
• the bow spring can have two legs, which comprise a receiving area for the tension spring and a clamping area.
• the bow spring in the area of the mounting can have essentially parallel, immediately adjacent diaphragm sections.
• the extension can have a guide and the bow spring have a contour corresponding to the guide, whereby the bow spring is additionally guided during the spreading when the joint part is folded down.
• the shape of the bow spring can be integrated into the tension spring eyelet shape, so that there is no need for a bow spring.
• a stop surface cooperating with the joint part can be provided on the extension to limit the joint path. This can also be accommodated in the fastening part, e.g. B. Stop the bow spring as the upper limit of the folding movement angle.
• Fig. 1 shows a wiper arm in the park position in longitudinal section
• Fig. 2 shows the wiper arm from Fig. 1 in the folded position
• Fig. 3 shows a section along the line A of Fig. 1, the
• Fig. 4 is a section along the line BB of Fig. 2
• Fig. 5 is a bow spring in plan view
• FIG. 7 is a view from below in the area of the wiper arm joint of the wiper arm from FIG. 1 and FIG
• FIG. 8 is a bottom view of the wiper arm in the folded position according to FIG. 2nd
• the wiper arm 1 shows a wiper arm in the park position, that is to say in the wiper blade resting on a windshield.
• the wiper arm 1 has a fastening part 2 and a joint part 3, which are connected to one another by means of a wiper arm joint 4 consisting of a bearing bush 5 and a rivet pin 6.
• a cap 7 is also attached, which can be pivoted about the wiper arm joint 4 for the purpose of fastening the fastening part to a pivot.
• the wiper arm joint 4 allows the joint part 3 to be folded down relative to the fixed fastening part 2 against the force of a prestressed tension spring 8.
• the tension spring 8 is hooked at one end 8.1 into a bow spring 9, which in turn is hooked into a pin 10 connected to the fastening part 2 .
• the other end 8.2 of the tension spring 8 is suspended in an eyelet 11 of the joint part 3.
• the bow spring 9 can also be omitted and the eyelet 8.1 is then replaced by a form eyelet that overrides the purpose of the bow spring.
• a support surface 12 is provided on the fastening part 2, which cooperates with a corresponding wall section of the joint part 3.
• This contact surface 12 is arranged on an extension 13 of the fastening part 2 which extends beyond the wiper arm joint 4.
• This extension 13 also has the function of ensuring that the hinged joint part 3 is locked.
• the wiper arm 1 shows the wiper arm 1 in a folded-down position, the cap on the fastening part 2 being dispensed with for the purpose of better illustration.
• the joint part 3 is folded away from the windshield by a folding angle ⁇ ⁇ 30 ° relative to the fastening part 2, the bow spring 9 being locked on the extension 13 by a cam 14.
• the bow spring 9 and the extension 13 are designed in a special way, as will be explained in the following.
• FIG. 3 shows a section along the line AA from FIG. 1.
• the joint part 3 can be seen, which bulges like a hood over the extension 13 at the end of the fastening part 2.
• the wiper arm joint is indicated by the bearing bush 5 and the rivet pin 6.
• the extension 13 has in the middle in the direction of the tension spring 8, ie in Longitudinal direction of the wiper arm, extending rib 15, on which the cam support 14.1, 14.2 of the cam 14 is provided on each of its sides 16.1, 16.2.
• the cam 14 arranged on the rib 15 has a bell-shaped end 14.3 in cross section, the base of the bell being formed by the cam supports 14.1, 14.2.
• the cam end 14.3 is enclosed by two legs 9.1, 9.2 of the bow spring 9, wherein in the areas indicated by the arrows between the bow spring 9 and the cam end 14.3 in the working area of the wiper arm, at most only slight contact may occur. However, preferably no contact takes place in this position, so that no frictional forces arise which could impair the action of the tension spring.
• the tines 13.1 and 13.2 of the extension 13 are the cut surfaces shown in section A-A.
• the bow spring 9 is shown in its position on the central rib 15 with the wiper arm folded down.
• the legs 9.1, 9.2 are now offset towards the center of the wiper arm on the cam supports 14.1, 14.2 in such a way that a locking is ensured despite the spring force of the tension spring 8.
• FIG. 5 a specially designed one is shown in FIG. 5
• the bow spring 9 has two legs 9.1, 9.2. These legs 9.1, 9.2 are essentially parallel to one another, but the legs 9.1, 9.2 abut one another only in the region of the bearing on the bolt 10 can. Otherwise, they enclose an intermediate space 21, in which the tension spring 8 engages at the end 8.1 opposite the bolt 10.
• the space 21 has a widening 21.1, which is widened compared to a damping space 21.2 arranged approximately in the central region.
• This Knellrnraurn 21.2 5 is limited by the sections 9.3, 9.4 of the legs 9.1 and 9.2, which rest in the folded position of the wiper arm along the bell-shaped end 14.3 of the cam 14 on the cam supports 14.1, 14.2.
• FIG. 6 shows a side view of the bow spring 9, the essentially flat structure of the bow spring being shown with the exception of a hook-shaped anchoring region 9.7 around the pin 10.
• FIGS. 7 and 8 The more precise configuration of the locking between the cam 14 and the bow spring 9 is shown in FIGS. 7 and 8.
• Fig. 7 the wiper arm is shown in its rest position, i.e. attached to the windshield.
• the bow spring 9, in which the tension spring is hooked at its end 8.1, is hooked onto the bolt 10 and encloses with its interior 21 the cam 14 of the central rib 15.
• the central rib 15 has a thickening 15.1 which extends into the plane of the drawing. This Nerdickung 15.1 comes to lie approximately in the elbow-shaped area 9.5, 9.6 of the bow spring 9 and ensures its guidance during the folding.
• the thickening 15.1 provides additional guidance during the spreading operation of the bow spring 9.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Transmission Devices (AREA)
• Pivots And Pivotal Connections (AREA)
• Vehicle Body Suspensions (AREA)
• Springs (AREA)

Priority Applications (7)

Applications Claiming Priority (2)

Publications (1)

Family

ID=7910097

Family Applications (1)

Country Status (10)

Families Citing this family (13)

Citations (3)

Family Cites Families (4)

• 1999
  • 1999-06-02 DE DE19925388A patent/DE19925388A1/de not_active Ceased
• 2000
  • 2000-05-25 US US09/744,083 patent/US6394688B1/en not_active Expired - Fee Related
  • 2000-05-25 PL PL345792A patent/PL200831B1/pl not_active IP Right Cessation
  • 2000-05-25 CZ CZ20010376A patent/CZ296679B6/cs not_active IP Right Cessation
  • 2000-05-25 DE DE50010821T patent/DE50010821D1/de not_active Expired - Lifetime
  • 2000-05-25 CN CNB008009708A patent/CN1154590C/zh not_active Expired - Fee Related
  • 2000-05-25 KR KR1020017001375A patent/KR20010072169A/ko not_active Application Discontinuation
  • 2000-05-25 EP EP00943644A patent/EP1098793B1/de not_active Expired - Lifetime
  • 2000-05-25 BR BRPI0006190-5A patent/BR0006190B1/pt not_active IP Right Cessation
  • 2000-05-25 JP JP2000621198A patent/JP2003500286A/ja not_active Withdrawn
  • 2000-05-25 WO PCT/DE2000/001697 patent/WO2000073109A1/de not_active Application Discontinuation

Patent Citations (3)

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